We would like to construct a 99% confidence interval for the mean, based on a sample of 50 observations. The sample standard deviation is 5.5 and the sample mean is 22. The population standard deviation is 3.6. Calculate the lower confidence limit. Round your answer to 3 decimals if needed

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels. ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0

Yesi's dog weighed 5 pounds when she got him. he now yesi's dog weighed 5 pounds when she got him. he now weighs 45 pounds. how much did yesi's dog gain, in ounces?